And secondly, Silverstone casing costs more than CM Elite 371, but note that 371 has 8 fans: 1 front with filter, 1 bottom with filter, 2 top with filter and 1 rear w/o filter, and 2 at side window.
Whereas, Silverstone has 5 fans: 1 front with filter, 2 top with filter, 1 rear and 1 bottom w/o filter, no side fans.

And secondly, Silverstone casing costs more than CM Elite 371, but note that 371 has 8 fans: 1 front with filter, 1 bottom with filter, 2 top with filter and 1 rear w/o filter, and 2 at side window.
Whereas, Silverstone has 5 fans: 1 front with filter, 2 top with filter, 1 rear and 1 bottom w/o filter, no side fans.

Now tell me what would u purchase in term of better air cooling??

hah.. god there is so much to choose from. I like quiet computers personally.

Noctua fans are really solid but ugly. Brown is the cheapest color to make ;-)

I would start with 3rd party cpu cooling if anything. It all starts with keeping that sucker cool.